frontend: make "any host in cluster" bigger

In french locale it was broken into 2 lines. The
width: 150px did not make any sense so removing which
makes it 100% width (the default).

Change-Id: I9e8576b0c355a6ac67a8b3a7c96fa11fb3c87006
Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=1001853
Signed-off-by: Tomas Jelinek <tjelinek@redhat.com>